In this clip from MTV’s Frame by Frame
, her “I Knew You Were Trouble” co-star Reeve Carney spills some of the juicy details from the video shoot.

“I’m a pretty old-fashioned guy, I would say,” chuckled Carney. “So it was kind of strange for me to be kissing like six girls in the course of about a minute. … I didn’t even get to know their names. That’s the sad part about it.”

Playing a devious heartbreaker, Carney got to do more than just kiss — like fight with some tough-guy stuntmen — but none of that was his favorite part.

“That car was really, really fun,” he said while watching himself and Swift goof off inside in the moving car. “That’s the good thing about not being ‘the star.’ They would probably never have let Taylor stand up like that even if she had begged to, and I think she would have liked to actually.”

About his co-star, Carney said Swift was a natural.

“They did a lot of shooting, just sort of having us improvise and Taylor was great at that,” he revealed. “Not to be silly by using the name of one of her albums, but she is a very ‘fearless’ person, or at least she comes off that way.”